With a pond there may be more options. However, for an aquarium, I know if
know way other than physical removal. I have used a fish net, or I have
used an inverted python as a skimmer to suck the plants to oblivion. (A
python is a siphoning device which attaches to a sink and uses water
pressure to suck out tank water. When finished sucking out tank water, a
valve can be reversed to put water back into the tank.)

-Bruce Geist
"Anna Vaca" wrote in message
...
Any ideas how to get rid of duck weed. My pond is at the end of reed beds,
but I got duck weed from the garden centre. I do get the odd duck at
mating
time visiting the pond.
Any ideas without use of chemicals as the pond is rich in wild life. I
suspect the nitroget content may be higher, as its at the end of a reed
bed.

Thanks Anna